Sliding window



Mw 2g w34@ K. BRAUN SLIDNG WINDOW Filed March 20, 193

Patented May 29, 1934 NTD STTS wenn FFlCE Application March 20,

1933, Serial No. 661,825

En Germany March 23, 1932 6 Claims.

The invention relates to a sliding window and particularly to a guideand stop device for the upper sash of a two-part sliding or drop window.

The upper sash of windows of the above named kind is usually adapted toslide between guide flanges, which are xed to the window posts andextend substantially over the upper part of the window opening, and thelower end oi the window is equipped with laterally pro- 10 jecting pinssliding in vertical guides in the window posts. When the upper sash of awindow of this kind is lowered the upper end of same will finally slideout ofthe guide flanges and, when in this position, the window tends todrop inward. This is of course a serious drawback, since in such casethe person handling the window may be injured or the window itself maybe damaged. The main purpose of the invention is to provide means forpreventing inadvertent and undesired tiltings of the upper sash whenthis is lowered into its lowermost position.

In accordance with the invention, upwardly opening stop notches for theguide pins oi" the upper window are arranged at the lower end of saidguide channels in such a height, that, when the upper window is lowered,the guide pins and consequently the sash are stopped before the upperend of rame gets out of engagement with the guide lianges.

The invention also comprises means which will allow a limited andcontrolled inward tilting of the upper sash when in its lowermostposition. This means consists in substantially vertical guide slots,which communicate with the upwardly opening stop notches and arearranged in staggered relation to the same. The lower ends oi theseslots communicate with downwardly opening stop notches, which preferablyare arranged substantially vertically below the said upwardly openingstop notches. By an auxiliary manipulation the guide pin of the sash maybe lowered from the top to the bottom notch the upper end of the sashmeanwhile sliding out of engagement with the guide flanges and tiltinginward, whereby the guide pins oi the sash are automatically forced intothe lower downwardly opening stop notches and the sash is held in aposition in which the outer side of the same without difficulty may becleaned.

The said communicating stop notches and guide slots or grooves may beformed in the window posts proper but are preferably formed inplate-shaped bodies of metal or other suitable material which are fixedto the window posts' (C1. Eil-42) at the lower ends of the guidechannels for the guide pins.

A constructional form of the invention is illus-4 trated by way ofexample in the accompanying drawing:

Fig. l is a front elevation of a two-part sliding or drop windowaccording to the invention.

Fig. 2 isy a transverse vertical section through the same window.

Fig. 3 shows a detail.

ln the drawing 1 denotes the window posts of a two-part sliding or dropwindow comprising an upper 'window 2 and a lower window 3. The lower endof the upper window 2 is equipped with laterally projecting guide pins ladapted to slide in guide channels 5 in the window posts. 6 denotesvertical guide lianges which extend substantially over the upper halfpart of the window opening and between which the upper window slideswith a suitable play.

At the lower ends of each of the guide channels 5 a plateshaped body 7is xed in which stop notches and guide slots are formed. The upwardlyopening stop notch 8 (Figs. 2 and 3) forms in a way an extension of theguide channel 5.V In staggered relation to the notch 8 a vertical slot 9is formed the upper end of which communicates with the notch 8 and thelower end of which communicates with a downwardly opening stop notch 10arranged below the notch 8.

When the upper window 2v V.lowered in the normal way the guide pinsllrwill finally abut against the bottom of the notches S, whereby afurther lowering of the window is prevented. The notches are asmentioned arranged on such a level that the downward movement oi theupper window 2 is stopped before the upper end oi the same gets out ofengagement with the guide flanges 6. clean the outer side of the window2 the same is lowered as usual and during the vlast stage of thismovement the lower end of the window is pulled inward. The eiect of thisaction is,

that the pins 4 will not be caught by the notches I,

These slots are of Ii it is desired toinspect o1' ros varied indifferent ways without departing from the scope of the invention as setforth in the appended claims.

I claim:

1. A guide and stop device for the upper sash of a two-part slidingwindow comprising lateral guide anges for said upper sash extendingsubstantially over only the upper half part of the window frame,laterally projecting guide members on the upper sash adapted to slide inguide channels in said frame and stop means cooperating with each guidemember of the upper sash and having two vertically spaced rest notches,one for supporting the upper sash in fully lowered position clear ofsaid guide flange whereby the sash can pivot about said rest, and theother rest notch for supporting the upper sash in nearly loweredposition with said guide flange preventing its pivotal movement, saidstop means having also a groove connecting the rest notches in such amanner that an auxiliary manipulation of the sash is necessary to shiftthe guide member from one rest notch to the other.

2. A guide and stop device for the upper sash of a two-part slidingwindow comprising lateral guide flanges for said upper sash extendingsubstantially over only the upper half part of the window frame,laterally projecting guide members on the upper sash adapted to slide inguide channels in said frame, stop means cooperating with each guidemember of the upper sash and having an upper rest notch aligned with thepath of the guide member for supporting the sash in nearly loweredposition still guided by the guide iianges, a lower rest notch alignedwith the upper rest notch for supporting the sash in fully loweredposition clear of the guide flanges, and a groove laterally offset fromsaid notches and connecting the same, the upper notch having a lipbetween it and the groove over which the guide member has to be liftedin passing from the upper to the lower notch.

3. A guide and stop device for the upper sash of a two-part slidingwindow comprising lateral guide flanges for said upper sash extendingsubstantially over only the upper half part of the window frame,laterally projecting guide members arranged at the lower end of saidsash, guide channels in said frame adapted to receive the guide members,andoplates arranged at the lower end of said guide channels and havingupwardly opening stop notches arranged at the lower end of said guidechannels and adapted, when the upper sash is lowered, to stop thedownward movement of this sash whilst the upper end of same is still inengagement with the guide flanges.

4. A guide and stop device for the upper sash of a two-part slidingwindow comprising lateral guide iianges extending substantially overonly the upper half part of the window frame, laterally projecting guidemembers arranged at the lower end of said sash, guide channels in sa'dframe adapted to receive the guide members, plates arranged at the lowerend of said guide channels and having upwardly opening stop notchesarranged at the lower end of said guide channels and adapted, when theupper sash is lowered, to stop the downward movement of this sash whilstthe upper end of same is still in engagement with the guide iianges,substantially vertical guide slots arranged in said plates in staggeredrelation to said stop notches, communicating with same and with saidguide channels and allowing said upper sash to be lowered until theupper end of same slides out of the guide flanges, and downwardlyopening stop notches in said plates communicating with said guide slotsand adapted to receive and hold said guide members when the upper end ofthe sash tilts inward on leaving the guide flanges.

5. A sliding window construction comprising l in combination a lowersash, an upper sash, window posts, laterally projecting guide membersattached near the lower end of said upper sash, guide channels for saidguide members in said posts, guide flanges on said posts extendingsubstantially over only the upper half part of the posts, and stopnotches arranged at the lower end of said guide channels and adapted,when the upper sash is lowered, to stop the downward movement of thissash whilst the upper end of same is still in engagement with the guideflanges.

6. A sliding window construction comprising in combination a lower sash,an upper sash,

window posts, laterally projecting guide members attached near the lowerend of said upper sash, guide channels for said guide members in saidposts, guide flanges on said posts eX- tend'ng substantially over onlythe upper half part of the posts, upwardly opening stop notches arrangedat the lower end of said guide channels and adapted, when the upper sashis lowered, to stop the downward movement of this sash whilst the upperend of same is still in engagement with the guide flanges, guide slotscommunicating with said guide channels and said stop notches andallowing said upper sash to be lowered until the upper end of sameslides out of the guide flanges, and downwardly opening stop notchescommunicating with said guide slots and adapted to receive and hold saidguide members when the upper end of the sash tilts inward on leaving theguide flanges. KARL BRAUN.

